US5618197A - Arrangement for establishing electrical connection - Google Patents

Arrangement for establishing electrical connection Download PDF

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Publication number
US5618197A
US5618197A US08/320,659 US32065994A US5618197A US 5618197 A US5618197 A US 5618197A US 32065994 A US32065994 A US 32065994A US 5618197 A US5618197 A US 5618197A
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US
United States
Prior art keywords
contact
fingers
row
magazine
contact fingers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US08/320,659
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English (en)
Inventor
Helge Bodahl-Johnsen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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Filing date
Publication date
Application filed by Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON reassignment TELEFONAKTIEBOLAGET LM ERICSSON ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BODAHL-JOHNSEN, HELGE
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/42—Securing in a demountable manner
    • H01R13/436—Securing a plurality of contact members by one locking piece or operation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
    • H01R12/721—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures cooperating directly with the edge of the rigid printed circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H05K7/1417—Mounting supporting structure in casing or on frame or rack having securing means for mounting boards, plates or wiring boards
    • H05K7/1418—Card guides, e.g. grooves

Definitions

  • the present invention relates to an arrangement for making electrical connections, and then particularly, but not exclusively to an arrangement for connecting mechanically and electrically each of a number of contact surfaces located in a row along one edge-part of a printed circuit board with each of a number of contact devices in the form of contact fingers disposed in a contact row in one plane of a magazine that is intended to accommodate a plurality of circuit boards, and to enable the mechanical and electrical connection to be broken when necessary.
  • circuit board carrying the row of discrete contact surfaces is guided in and out of the magazine with the application of a small force and with the aid of mutually opposing grooves or the like, wherewith the contact surfaces are out of contact with the contact fingers carried by the magazine.
  • inventive arrangement can be considered to be close to the arrangement described and illustrated in Swedish Patent Application 7109599-6, Publication No. 379,917 (corresponding to U.S. patent application Ser. No. 58522, filed on Jul. 27, 1970).
  • This publication teaches a circuit-board and circuit-block assembly in which a printed circuit board (15) has been provided with contact surfaces (16) and a contact finger (14) has been placed adjacent each contact surface (16).
  • the contact fingers (14) are intended to be brought to positions adjacent respective contact surfaces (16) and with the contact fingers thus positioned an elongated device (40) is moved in the longitudinal direction of the contacts (11, 16) so as to press respective fingers (11) down into electrical and mechanical contact with respective contact surfaces (16) with the aid of a spring device (42), this movement of the device (40) being effected in a direction illustrated by an arrow (51), from a position shown in FIG. 2 to a position shown in FIG. 5.
  • each circuit board has upper and lower edge-parts which coact with top and bottom grooves or channels in the magazine, and wherein each circuit board carries on the edge-surface thereof that faces inwardly of the magazine carries one part of a connecting element which is intended to be moved into and out of coaction with a second part of the connecting element located adjacent the backplane of the magazine, and wherein each of the two parts of the connecting element is provided with a corresponding connecting device, such as a pin connector and socket connector.
  • a technical problem is one of realizing the significance of giving the elongated device a length which conforms to the length of the circuit board, and by arranging the elongated device for movement in a direction parallel to the row of contact surfaces.
  • Another technical problem is one of realizing the significance, and also the simplicity of allowing one end-part of the elongated device to bend or flex respective contact fingers towards corresponding contact surfaces as the elongated member moves, wherein respective contact fingers will be held against said contact surfaces by the remaining part of the elongated device at a given pressure.
  • Another technical problem is one of realizing the significance of causing the first contact fingers to be connected initially to earth potential by initial movement of the elongated device, and thereafter connected to a normalized supply voltage or, alternatively, to connect each or selected contact fingers to successively increasing supply voltages.
  • the present invention takes as its starting point an arrangement for making electrical connections of the kind described in the introduction.
  • the elongated device is arranged to be inserted into the magazine in a direction parallel to a row of board-carried contact surfaces and also parallel to a board-allocated plane, wherein the end-part of the device functions to sequentially bend or flex respective contact fingers into contact with corresponding contact surfaces on the circuit board as the elongated device moves, and wherein respective contact fingers are held in electric contact with respective board-carried contact surfaces at a given adapted pressure by the remaining part of the elongated device.
  • a base-mounted guide groove is provided adjacent the contact fingers for coaction with the elongated device.
  • the first contact finger or some of the first contact fingers is/are connected to earth potential, while supply voltages are applied to the contact finger or the contact fingers that follow the first contact finger or fingers. It is particularly proposed that the selected supply voltage applied is increased in a number of voltage steps, preferably two voltage steps, against a normalized voltage.
  • circuit board is provided with contact surfaces on opposite surfaces of one and the same edge-part, and that a row of contact fingers is disposed on a respective side of said edge-part, wherein a U-shaped elongated device can be arranged to move simultaneously pairs of opposing contact fingers towards one another as the device is inserted.
  • two or three edge-parts of the circuit board are provided with one or two rows of contact surfaces on one or both sides.
  • One, two or three edge-parts is/are provided with two or more parallel rows of contact surfaces and one contact finger in a row of contact fingers is intended for coaction with a contact surface in one row, another contact finger of one row of contact fingers is intended for coaction with a contact surface in an adjacent row, and so on.
  • Certain of the contact fingers shall be connected to a first normalized supply voltage, while other contact fingers shall be connected to one or more other normalized supply voltages which differ from the first normalized supply voltage, and so on.
  • an inventive arrangement for making electrical connections are that when this arrangement is used for mechanical and electrical contact between each contact surface of a row of contact surfaces disposed along one edge-part of a printed circuit board with each contact finger of a number of contact fingers disposed in a plane in a multi-board magazine, or vice versa, the possibility is afforded of enabling a bottom plane or a top plane to serve as a holder for magazine-carried contact fingers and therewith create conditions which will enable a printed circuit board to be inserted easily, effectively and with only a small force into a magazine with no mechanical or electric contact between the board-carried contact surfaces and the magazine-carried contact fingers, whereafter the contact fingers can be brought into electric contact with the board-carried contact surfaces with the aid of an elongated device, by inserting the elongated device in a direction parallel with the row of contact surfaces and a board-allocated plane and behind and transversely to the contact fingers, which are moved sequentially into contact with corresponding contact surfaces by the
  • the size or thickness of the elongated device can be adapted to obtain a desired contact pressure, while only a moderate force is required to insert the elongated device, which can be readily achieved by hand.
  • FIG. 1 is a perspective view of a magazine which accommodates a number of printed circuit boards, and shows a circuit board inserted in the magazine but out of mechanical and electric contact with the magazine-carried contact fingers;
  • FIG. 3 is a sectional horizontal view of the electrical connection arrangement.
  • the present invention is based on an arrangement 1 for making electrical connections, with which each of a number of contact surfaces disposed in a row along one edge-part, a lower edge-part 2a of a printed circuit board 2 can be brought into mechanical and electrical contact with each of a number of contact devices, for instance in the form of contact fingers 3c disposed in a plane, a bottom plane 3a, of a magazine 3 which is able to accommodate a plurality of circuit boards 2, or vice versa.
  • the circuit boards 2 and the row 3b of contact fingers 3c are mutually so adapted as to enable a board 2 to be inserted into the magazine on one side of the contact fingers easily and with little force, such that the contact surface 3c' of each, 3b, of the contact fingers 3c will be located immediately adjacent its board-carried contact surface 2b. Movement of the contact fingers into electrical and mechanical contact with its contact surface 2b is effected with the aid of an elongated device 4, which is inserted into the magazine in the direction P, to a position in which it coacts with all contact fingers 3c, therewith moving the contact fingers towards and into contact with the contact surfaces 2b in said row of contact surfaces.
  • the magazine 3 includes a top plane 3d and a backplane 3e, wherein the bottom plane 3a serves in this case as the plane which carries the magazine-allocated contact rows, one for each board, these rows of contacts coacting with an electric circuit provided in the bottom plane 3a in a known manner.
  • the elongated device 4 is intended to be inserted into the magazine in a direction P with a centre line 4' on the device 4 parallel with said row of contacts and also with a board-allocated plane, although at right angles to the vertical extension of the contact fingers 3c.
  • a base or block 5 Mounted adjacent the contact fingers 3c is a base or block 5 which includes a hole 6a opening into a guide channel 6b which receives and guides the elongated device 4 to facilitate movement of the device in the direction of the arrow P.
  • the very first finger 3c1 shall be connected to earth potential, whereas the second finger 3c2 and the third finger 3c3 shall be connected to different and/or increasing normalized supply voltages.
  • This enables the supply voltage for one contact finger 3c2 to have a lower value than a normalized supply voltage, wherewith connection of the supply voltage to the circuit board and the electrical and electronic devices mounted thereon will take place in two or more steps.
  • the earth potential and various supply voltages may be supplied from the bottom plane 3a through stems 31c of the contact fingers, for example.
  • FIG. 3 illustrates insertion of the device 4 along the contact fingers, wherein the device 4 has pressed each of two fingers 3c1, 3c2 down into contact with respective contact surfaces 2b1 and 2b2.
  • a contact surface 3c' of each contact finger shall be brought into electrical and mechanical contact with a contact surface 2b2.
  • the front part 4a of the device 4 will press down the contact finger 3c3, and so on.
  • one edge 2a may be provided with rows of contacts 2b on opposing surfaces 2a' and 2a".
  • the contact surfaces 2b and 2b' and the contact fingers in the rows 3b, 3b' shall be coordinated so that respective contact fingers coact with their allotted contact surfaces on their side.
  • two elongated devices 4 can be used, one for each row of contacts, or alternatively there may be used a U-shaped device 40 whose legs 41 and 42 are inserted into the magazine simultaneously, so as to activate pairs of contact fingers 3c1, 3c2, and 3c 3 located on respective sides of the board at one and the same time.
  • This embodiment is also shown in FIG. 3 where leg 41 would correspond to 4a and 4b and leg 42 would correspond to 4a and 4b.
  • two edge-parts, the bottom and the upper edge-parts, or three edge-parts, the bottom, the top and the rear edge-parts of the circuit board 2 may be provided with one or two (or more) rows 2b, 2b' of contact surfaces on one or both sides.
  • Each contact surface shall be capable of coacting with a contact finger also in this case, and consequently the contact fingers will be located in corresponding parallel rows.
  • a "first" normalized supply voltage can be applied to one contact finger (optionally preceded by one or more contact fingers to which a lower voltage is applied), a second, a third, etc., normalized supply voltage may be applied to other contact fingers or groups of contact fingers.
  • the magazine may be supplemented when necessary with a very large number of contact surfaces on the board 2, so that the direction indicated by the illustrated arrow P1 will apply for contact fingers positioned in a row across the backplane 3e.?

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Multi-Conductor Connections (AREA)
US08/320,659 1993-10-12 1994-10-11 Arrangement for establishing electrical connection Expired - Lifetime US5618197A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9303343A SE501896C2 (sv) 1993-10-12 1993-10-12 Elektriskt anslutningsarrangemang
SE93033439 1993-10-12

Publications (1)

Publication Number Publication Date
US5618197A true US5618197A (en) 1997-04-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US08/320,659 Expired - Lifetime US5618197A (en) 1993-10-12 1994-10-11 Arrangement for establishing electrical connection

Country Status (17)

Country Link
US (1) US5618197A (fi)
EP (1) EP0723711B1 (fi)
JP (1) JP3060538B2 (fi)
KR (1) KR100284456B1 (fi)
CN (1) CN1068464C (fi)
AU (1) AU678068B2 (fi)
BR (1) BR9407805A (fi)
CA (1) CA2172615A1 (fi)
DE (1) DE69404163T2 (fi)
DK (1) DK0723711T3 (fi)
ES (1) ES2106566T3 (fi)
FI (1) FI961596A0 (fi)
GR (1) GR3024411T3 (fi)
NO (1) NO961422D0 (fi)
SE (1) SE501896C2 (fi)
TW (1) TW335567B (fi)
WO (1) WO1995010864A1 (fi)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6422877B1 (en) * 2000-10-05 2002-07-23 Motorola, Inc. Apparatus for coupling power to an electronics module
US20070238326A1 (en) * 2006-03-30 2007-10-11 Hassan Fallah-Adl Module to couple to a plurality of backplanes in a chassis
US20080032518A1 (en) * 2006-08-01 2008-02-07 Honeywell International Inc. System and method for distributing power in an electronic system
US20140113473A1 (en) * 2012-10-18 2014-04-24 Jon Brian Ehlen Floating bus bar and connector within chassis
US9450358B2 (en) 2012-10-18 2016-09-20 Facebook, Inc. Floating bus bar and connector within chassis and powered slide rails
US9693477B1 (en) * 2016-06-03 2017-06-27 Facebook, Inc. Continuously powered server sled
US10015903B1 (en) 2017-06-09 2018-07-03 Facebook, Inc. High power safety sled
US10756500B2 (en) 2016-11-28 2020-08-25 TE Connectivity Services Gmbh Power connector assembly for a communication system

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1052853C (zh) * 1996-07-02 2000-05-31 湖南省园艺研究所 一种防治辣椒卷叶症状的农药组合物
DE202006010806U1 (de) * 2006-07-13 2006-10-05 Harting Electronics Gmbh & Co. Kg Andruckvorrichtung für eine Leiterplatte
KR100925992B1 (ko) 2007-09-04 2009-11-09 에버테크노 주식회사 에스에스디（ｓｓｄ）용 소켓 가이드장치
CN103596401B (zh) * 2013-10-28 2016-04-27 中国科学院长春光学精密机械与物理研究所 一种电路板装卡装置
US10939576B2 (en) 2018-11-28 2021-03-02 Te Connectivity Corporation Power connector assembly for a communication system

Citations (6)

* Cited by examiner, † Cited by third party
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US3537063A (en) * 1968-06-17 1970-10-27 Ibm Circuit card connector
US3576515A (en) * 1968-08-27 1971-04-27 Amp Inc Printed circuit edge connector
US3663920A (en) * 1970-07-27 1972-05-16 Burndy Corp Mounting for integrated circuits
US3912353A (en) * 1973-05-11 1975-10-14 Nippon Electric Co Connector for a circuit card having means for forcing spring contacts into contact with the card after the card is put in position
US4556268A (en) * 1983-11-23 1985-12-03 Burndy Corporation Circuit board connector system having independent contact segments
US5240430A (en) * 1991-10-31 1993-08-31 Amp Incorporated Electrical connector for cable to circit board application

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3380016A (en) * 1965-05-03 1968-04-23 Burroughs Corp Electronic circuit package storage,forming and handling apparatus
JPS61116783A (ja) * 1984-11-10 1986-06-04 山一電機株式会社 格子配列形ｉｃパツケ−ジ用ソケツト
DE3909284A1 (de) * 1989-03-21 1990-09-27 Nixdorf Computer Ag Steckkontaktanordnung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3537063A (en) * 1968-06-17 1970-10-27 Ibm Circuit card connector
US3576515A (en) * 1968-08-27 1971-04-27 Amp Inc Printed circuit edge connector
US3663920A (en) * 1970-07-27 1972-05-16 Burndy Corp Mounting for integrated circuits
US3912353A (en) * 1973-05-11 1975-10-14 Nippon Electric Co Connector for a circuit card having means for forcing spring contacts into contact with the card after the card is put in position
US4556268A (en) * 1983-11-23 1985-12-03 Burndy Corporation Circuit board connector system having independent contact segments
US5240430A (en) * 1991-10-31 1993-08-31 Amp Incorporated Electrical connector for cable to circit board application

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6422877B1 (en) * 2000-10-05 2002-07-23 Motorola, Inc. Apparatus for coupling power to an electronics module
US20070238326A1 (en) * 2006-03-30 2007-10-11 Hassan Fallah-Adl Module to couple to a plurality of backplanes in a chassis
US7458815B2 (en) * 2006-03-30 2008-12-02 Intel Corporation Module to couple to a plurality of backplanes in a chassis
US20080032518A1 (en) * 2006-08-01 2008-02-07 Honeywell International Inc. System and method for distributing power in an electronic system
US7390192B2 (en) * 2006-08-01 2008-06-24 Honeywell International Inc. System and method for distributing power in an electronic system
US20140113473A1 (en) * 2012-10-18 2014-04-24 Jon Brian Ehlen Floating bus bar and connector within chassis
US8911251B2 (en) * 2012-10-18 2014-12-16 Facebook, Inc. Floating bus bar and connector within chassis
US9450358B2 (en) 2012-10-18 2016-09-20 Facebook, Inc. Floating bus bar and connector within chassis and powered slide rails
US9693477B1 (en) * 2016-06-03 2017-06-27 Facebook, Inc. Continuously powered server sled
US10756500B2 (en) 2016-11-28 2020-08-25 TE Connectivity Services Gmbh Power connector assembly for a communication system
US10015903B1 (en) 2017-06-09 2018-07-03 Facebook, Inc. High power safety sled

Also Published As

Publication number Publication date
FI961596A (fi) 1996-04-11
WO1995010864A1 (en) 1995-04-20
EP0723711A1 (en) 1996-07-31
EP0723711B1 (en) 1997-07-09
CN1133107A (zh) 1996-10-09
DE69404163T2 (de) 1997-12-04
AU7951994A (en) 1995-05-04
KR960705381A (ko) 1996-10-09
GR3024411T3 (en) 1997-11-28
DK0723711T3 (da) 1998-02-09
SE9303343D0 (sv) 1993-10-12
JP3060538B2 (ja) 2000-07-10
FI961596A0 (fi) 1996-04-11
CN1068464C (zh) 2001-07-11
ES2106566T3 (es) 1997-11-01
DE69404163D1 (de) 1997-08-14
NO961422L (no) 1996-04-11
SE501896C2 (sv) 1995-06-12
JPH08510865A (ja) 1996-11-12
AU678068B2 (en) 1997-05-15
SE9303343L (sv) 1995-04-13
KR100284456B1 (ko) 2001-03-02
NO961422D0 (no) 1996-04-11
CA2172615A1 (en) 1995-04-20
BR9407805A (pt) 1997-05-06
TW335567B (en) 1998-07-01

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